Spring Boot GraalVM Native App

Background

This project is inspired by Spring Fu incubator and leverages an optimized builtin GraalVM feature that discards CGLIB and ImageBanner.

Class initialization is configured by default at build time except for few Lazy initializations.

Features

This app has following features:

• Functional Web Controller
• HTTP Message converter - text, json, xml
• REST error handler - similar of @ExceptionHandler
• Jackson
• Functional Spring Security - Based on JWT token and scope verification
• Functional Spring Data MongoDB support

Quick start

This project can be completely run in docker containers. To run this project all you need is docker (17.x+) and docker-compose. You, do not need any GraalVM based runtime at all.

Run docker-compose up

• This will build the src code with a maven build and then trigger GraalVM native-image compilation.
• Next, it will create a thin image based on ubuntu with the native-image.
• It will start mongodb and a DB call - sb-jafu-app
• Start the Spring Boot services with bunch of controllers.

Notes:

• Only first time it will build the full docker image from src code. If you want to rebuild the image from src code run - docker-compose down and docker-compose kill
• Then build - docker-compose build and docker-compose up

Security:

• Security implementation is based on Spring Security Handler Function.
• Uses - io.jsonwebtoken library to build and parse stateless JWT token.
• Support for stateful Jws is WIP.

Work in progress for Dsl configs for Spring data mongodb, REST Handler fucntions and Resporitory Dsls.